Improvement in draft-equalizers



G. W. HARRINGTON.

DRAFT-EQUALIZER.

Patented Jan.Z3,18 77.

UN TED STATES PATENT Darren.

GEORGE W. HARRINGTON, OF ELAIN VIEW, MINNESOTA.

IMPROVE MENT IN DRAFT-EQUALIZERS. I

Specification forming part of Letters Patent No. 186,558, dated January23, 1877; application filed a l July 28', 1876.

To all whom it may concern: f

Be it known that L GEORGE W. HARRING- TON, of Plain View, in thecountyof Wabash and State of Minnesota, have invented a new and usefulImprovement in Draft Equalizers; andl do hereby declare that thefollowing is a full and exact description of the same, ret erencev beinghad to the accompanying drawings, and to the letters of reference markedthereon. The object of my invention is a draft-equalizer for threehorses, which can be readily at tached to a wagon-pole or the beam of aplow, and will be cheap in construction and efficient in operation.

My invention therein consists in the peculiar construction andarrangement of the principal operative parts, as fully hereinafterexplained. i

To enable others skilled in the art to man ufacture my device, I nowdescribe the same in connectionwith the drawings, in whieh'the 'gurerepresents a perspective view of my equalizer.

Like letters denote corresponding parts in each figure.

A represents the pole of a wagon or other vehicle or machine, or thebeam of a plow. A double. pulley, B, is pivoted upon the pole or "earnby a pin or bolt, a. A bracket, 1), incloses this pulley, and receivesone end of the pin or bolt. The double pulley consists of two groovedwheels or pulleys, O 0, preferably cast in one piece, but, when made ofwood, secured rigidly together in any suitable manner. The wheel orpulley'O is of larger diameter than the pulley the exact dimensionsbeing easily determined-and is mounted below the said pulley C. D is thecross-bar, pivoted to the pole or beam, and projecting farther on oneside than on the other to give room fortwo horses on that side, and, incon nection with the double pulley, to equalize the draft. On theshorter endof the cross-bar is pivoted a small friction-pulley, c,mounted in a bracket, 0.

A rope or chain, E, is secured at one end to the periphery of thegrooved pulley G at any suitable point, and, passing partly around thesame, extends through the shorter end of the cross-bar, and bearsagainst the friction pulley c. To the outer end of the rope or chainisattached a single whiffletree, d. Another rope or chain, E, is securedto the-periphery of the small grooved pulley O, and to the long end ofthe cross-bar. A double whiffletree, e, is attached to the long end ofthe cross-bar, a series of holes, c,being made in the said cross-bar,for the purpose of giving the advantage to' either the single or doubleteam. I

The principal advantages of my device lie in its adaptability for use ona plow, which heretofore has not been accomplished in any three-horseequalizer as a center draft, in the cheapness of construction, and theefficiency of operation.

Having thus fully described my invention, a

and explained some of its advantages, what I claim as new therein, anddesire to secure by Letters Patent, is

1. In a three-horse equalizer, the GOIIllblllflv tion of the doublegroo'vedpulley B, cross-bar and the ropes or chains E E, substantiallyas described and shown.

2. In a three-horse equalizer, the combination of the double groovedpulley B, cross-bar D,- the ropes or chains E E, and the frictionpulleyc, constructed and arranged substantially as described and shown.

' This specification-signed and witnessed this 14th dayof July, 1876.

Witnesses:

H. P. WILLSON, A. Y. FELTON.

GEORGE W. HARRINGTON.

